TUNGSTEN DISULFIDE: A NOVEL HYDROGEN EVOLUTION CATALYST FOR WATER DECOMPOSITION.

Andrzej Sobczynski, Attila Yildiz, Allen J. Bard, Alan Campion, Marye Anne Fox, Thomas Mallouk, Stephen E. Webber, John M. White

Research output: Contribution to journalArticle

68 Scopus citations

Abstract

Silica-supported tungsten disulfide was prepared by the reaction of WO//3/SiO//2 with H//2S at 300 degree C. The WS//2 hexagonal structure was confirmed by X-ray diffraction analysis. AES and XPS studies show the existence of residual tungsten oxides in addition to WS//2. Hydrogen evolution properties of WS//2/SiO//2 were determined by catalytic and photocatalytic (in the presence of fluorescein or CdS as sensitizers) tests and by electrochemical measurements. These were compared with silica-supported platinum. Although a graphite electrode immersed in a Pt/SiO//2 slurry evolved hydrogen at a more positive applied potential than in a WS//2/SiO//2 slurry, silica-supported tungsten disulfide was more active and stable than Pt/SiO//2 for catalytic hydrogen production both in the dark and under visible light illumination (with cadmium sulfide as a sensitizer).

Original languageEnglish (US)
Pages (from-to)2311-2315
Number of pages5
JournalJournal of physical chemistry
Volume92
Issue number8
DOIs
StatePublished - Jan 1 1988

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physical and Theoretical Chemistry

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    Sobczynski, A., Yildiz, A., Bard, A. J., Campion, A., Fox, M. A., Mallouk, T., Webber, S. E., & White, J. M. (1988). TUNGSTEN DISULFIDE: A NOVEL HYDROGEN EVOLUTION CATALYST FOR WATER DECOMPOSITION. Journal of physical chemistry, 92(8), 2311-2315. https://doi.org/10.1021/j100319a042